[INFO] updating cached repository CzarSimon/rust_tutorial
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CzarSimon/rust_tutorial
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CzarSimon/rust_tutorial" "work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CzarSimon/rust_tutorial" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_tutorial"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cbd2e2cdd95dd071fc5d21eb3bf5c9fdd1bb2e16
[INFO] sha for GitHub repo CzarSimon/rust_tutorial: cbd2e2cdd95dd071fc5d21eb3bf5c9fdd1bb2e16
[INFO] validating manifest of CzarSimon/rust_tutorial on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CzarSimon/rust_tutorial on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CzarSimon/rust_tutorial
[INFO] finished frobbing CzarSimon/rust_tutorial
[INFO] frobbed toml for CzarSimon/rust_tutorial written to work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial/Cargo.toml
[INFO] started frobbing CzarSimon/rust_tutorial
[INFO] finished frobbing CzarSimon/rust_tutorial
[INFO] frobbed toml for CzarSimon/rust_tutorial written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CzarSimon/rust_tutorial/Cargo.toml
[INFO] crate CzarSimon/rust_tutorial already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing CzarSimon/rust_tutorial against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c125fe805af2988fb9fa4ec7badcccce1f2395b8ff0f7490be72ca4bac9dd345
[INFO] running `"docker" "start" "-a" "c125fe805af2988fb9fa4ec7badcccce1f2395b8ff0f7490be72ca4bac9dd345"`
[INFO] [stderr]    Compiling libc v0.2.17
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling rust_tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `"docker" "inspect" "c125fe805af2988fb9fa4ec7badcccce1f2395b8ff0f7490be72ca4bac9dd345"`
[INFO] running `"docker" "rm" "-f" "c125fe805af2988fb9fa4ec7badcccce1f2395b8ff0f7490be72ca4bac9dd345"`
[INFO] [stdout] c125fe805af2988fb9fa4ec7badcccce1f2395b8ff0f7490be72ca4bac9dd345
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ec363af9357ec383b7e9a3512d7f7516a1b22b0da5cc2a9fc3b5329b6cca8d18
[INFO] running `"docker" "start" "-a" "ec363af9357ec383b7e9a3512d7f7516a1b22b0da5cc2a9fc3b5329b6cca8d18"`
[INFO] [stderr]    Compiling rust_tutorial v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "ec363af9357ec383b7e9a3512d7f7516a1b22b0da5cc2a9fc3b5329b6cca8d18"`
[INFO] running `"docker" "rm" "-f" "ec363af9357ec383b7e9a3512d7f7516a1b22b0da5cc2a9fc3b5329b6cca8d18"`
[INFO] [stdout] ec363af9357ec383b7e9a3512d7f7516a1b22b0da5cc2a9fc3b5329b6cca8d18
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CzarSimon/rust_tutorial:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 1c06fccd638226a1c9d49efcdcf5026109bc72278c3e5217586f1a07b5594ae9
[INFO] running `"docker" "start" "-a" "1c06fccd638226a1c9d49efcdcf5026109bc72278c3e5217586f1a07b5594ae9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_tutorial-bbf9e6efb3144e55
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1c06fccd638226a1c9d49efcdcf5026109bc72278c3e5217586f1a07b5594ae9"`
[INFO] running `"docker" "rm" "-f" "1c06fccd638226a1c9d49efcdcf5026109bc72278c3e5217586f1a07b5594ae9"`
[INFO] [stdout] 1c06fccd638226a1c9d49efcdcf5026109bc72278c3e5217586f1a07b5594ae9